Meaning & use
least common denominator
The smallest common multiple of the denominators of two or more fractions, used to add or subtract them.
See it in a sentence
To add one-third and one-fourth, first find the least common denominator, which is twelve.
Finding the least common denominator makes comparing fractions much easier.
A note on using this word
Often abbreviated "LCD"; it is closely related to the least common multiple of the denominators.
Words with a similar meaning
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